The company laid a total network of 602 km and commissioned six distribution and 85 consumer sub-stations in Mumbai during the year, a Tata Power release said.

"In line with our network development strategy, we plan to further strengthen the backbone infrastructure of the city to cater to our growing consumer base. We plan to set up additional 30 distribution sub- stations of which 17 are to be commissioned in the next five years and the remaining 13 post FY'19," Tata Power Executive Director Ashok Sethi said.

The private power firm has five lakh consumers in Mumbai as on April 30.